So upgrading to 0.94 saw that my Owntracks know_devices entity_ids grew a _2 on the back of them, making them
device_tracker.phone1_2
device_tracker.phone2_2
This broke all my location configuration, with the help of @tinkerer on Discord he advised that I:
1) Stop HA
2) Delete the old entry from known_devices.yaml
3) Start HA
4) Edit the entity in the entity registry to remove the _2
Which I did and my device tracking is working again but now there does not seem to be a device in know_devices.yaml anymore and I am unable to edit/maintain a custom display picture and friendly name for the devices… so it looks ugly, how can I edit this?